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15. SERVO AMPLIFIERS WITH A LARGE CAPACITY
(
30k TO 55kW
)
2) Drive unit
When an alarm occurs on the drive unit, the base circuit is shut off and the servo motor coasts. When
using an external dynamic brake (option), the external dynamic brake is activated to stop the servo
motor. To deactivate the alarm, execute the following: turn off and then on the control circuit power
supply, press the “SET” button on the current alarm screen, and turn off and then on the reset (RES).
However, the alarm cannot be deactivated unless its cause is removed.
OFFONOFF
1.5s
50ms or longer
OFF
(95ms) (3s)
Alarm occurrence
a)
a)
Converter unit control
power supply
Drive unit control
power supply
Main circuit
power supply
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Servo-on (SON)
Drive unit alarm
Drive unit reset
(RES)
Base circuit
Converter unit alarm
a) in Figure After completing to start the drive unit, the main circuit power is supplied while the
drive unit and the converter unit have no alarms.